Motor



M. NYSTROM.

MOTOR.

APPLICATIONFILED SEPT.30, 1921.

Patented Nov. 28, 1922.

3 SHEETS-SHEET l- -M. NYSTROM.

"MOTOR. APPLICATION FILED SEPT-30. 192a.

M. NYSTROM.

MOTOR.

APPLICATION man SEPT- 30. 1921.

p ,4 Patented NOV- 28, 1922.

3 SHEETSSHEET 3.

Ill-- Patented Nov. 28, 1922.

metres UNITED STATES Parser castes.

MARTIN NYSTROM, orv cnrcaeo, rumors, Assrenoa'ro rrrn BRUNS ICK-sense COLLENDER COMPANY, or onrcaeo, ILLInoIs, a ooaroaa'rron ,OF-DELAWAEE.

MOTOR.

Application filed September 30, 1921. Serial No. 504,449.

T alZ whom it may concern:

Be it known that'I, MARTIN NYsrRoM, a

citizen of the United States, residing at Chiv cago, in the county of Cook and State of Illinois, have invented certainnew and'useful Improvements in Motors, of which the following is a specification.

The object of this invention is to provide a simple and compact motor for phono- 10 graphs which will include all the features found necessary to practical service, and

which can be cheaply and easily manufactured. V g 7 Another object of the inventionis to produce a motor in which adjustments and repairs can be readily and quickly made.

Another object of the invention is to so arrange the parts that they can be assembled in 'a very small, light frame, or supporting structure, and be readily accessible for replacement or repair. Other and more specific objects of the invention will become apparent as the description is read in connection with the accompanying drawingillustraiting a se- 40 plate to which the framell of the motor is secured by the bolts 12. A longitudinal shaft 13 is supported in the standards 14,

V and 15 along the middle of the frame, and is held in place by a locking screw '16 or.

19 are loosely journalled on shaft 13, and the hubs 17 and 1 9 are equipped with gears 20 and 21 respectively. 'The inner end of a spiral spring 22 is secured to the hub 17 in 50 "any suitable manner, as by the screw 23, and

has its outer end fixed as by the rivet 24 to the rim 25 of a drum 26, having its hub 27 n e r ssed 9& the bea 3 of he Fig. 2 is a longitudinal section on the line" hub 17. The drum 26 is connected by a bayonet'joint 29, or other suitable device with a drum 30 having its hub portion 31 fastened to the hub 18. The inner end ofa spiral spring 32 is fixed to -the'hub'18 by the, screw 33 and its outer end is secured to a rim 34 of a drum 35 having a hub 36 journalled on a bearing 37 on the'hub 18.' The rim 34 is connected to a rim 38 of a drum 39 by abay onet joint 40, or other suitable device, and

the hub portion 41 of'the' drum 39 is journalled on a bearing 42 on the hub 19.. The outer end of a spring 43. is secured tothe rim 38 and its inner end is secured to the hub 19 by a screw 44. A spacer 45 is suitably supported between the springs 32 and 43. By this. arrangement all ofthe springs may be wound rotating the gear 20 and all of the springs will drive the gear 21. The, result is that the jumping and other irregularities incident to'spring 'motors is to a large extent eliminated and a spring length is provided that will drive the motor for a comparatively long period.

The winding mechanism includes the pinion 46 meshing with the gear 20 andfixed to a shaft 47 journalled in the standard 15 and equipped witharatchet wheel 48 adjacent to the threaded portion 49 on' whicha winding crank may be secured. A pawl 50 pivoted at 51'is equipped with teeth 52 adapted to engage the corresponding teeth 53 of the ratchet wheel 48, and prevent reverse movement of the shaft 47. A U-shaped friction clip 54 straddles the ratchet wheel 48 and is pivoted at 55 on the pawl 50. The

wings 56 and 57 of the clip 54 are arranged to frictionally engage the sides of the Y ratc'hetjwheel 48and may be corrugated or otherwise roughened to. provide the necessary resistance to relative movement. The wing-57 is equipped with an extension 58 adaptedto contactwith a pin 59 to limit the movement of, the clip 54 when the 4.5 other suitable means. The hubs 17,18 andratchetwheel 48 is rotated. In operation,

the crank or other deviceis applied to the shaft at 49 and the ratchet wheel 53 is rotated. A frictional engagement between the wheel and the wings 56 and 57 causes the clip to moveupwardly in Fig. 8 carrying with it the free end ofthe pawl 50. Upon aslight reverse movement of the wheel, the

equipped with a weight 83.

engagement with the ratchet. This con struction is very quiet, and at the same time very effective.

The gear 21 meshes with a pinion on a shaft 61 journalled in bearings 62 and 63 in. the standards 6ft and 65 respectively. The bearings 62 and 63' are threaded in the standards and are adjustable to take up play in the shaft. Set screws 66 and 67 serve to lock the, bearings in adjustment. The standard 65 has an obliquely arranged arm 68 in which the lower end of the vertical spindle 69 is journalled, the upper end being mounted in a suitable bearing 70 in the frame. This spindle is equipped with a worm 71 adapted to mesh with a worm wheel 72 on the shaft 61 by which the spindle may be driven from the springs above described. The upper end of the spindle is suitably constructed to receive a record table not shown. In order to control the speed ofthe spindle 69, I provide a governor of the centrifugal type which is driven from a worm wheel 72 on the spindle 69 which meshes with a worm 73 on the governor shaft 74 journalled in bearings 75 and 76 in standard 65 and the standard'TT respectively. These bearings are alsothreaded to the standards and are locked in place by suitable set screws. Loosely journalled on shaft 74- is a sleeve 78 having a collar 79 at one end and carrying a drum 80 at the opposite end. The web of the drum 80 is equipped with suitable slots through which are passed springs 81 secured at one end to the collar 79 and at the opposite end to a collar 82 rigid with the shaft 7d. Each spring is In operation, the centrifugal force causes the weights 83 to move outwardly, and thereby move the drum 8O downwardly in Fig. 1. A brake pad 84 is located adjacent to the drum 80 and is made adjustable so as to be frictionally engaged. with the drum when the motor tends to exceed a particular speed. I preferto mount the pad 84 on a screw 85 threaded to an arm 86 of the lever 87 pivoted on a bolt 88 and having anarm 89 engaged with the control mechanism 90.

The control mechanism includes a knob 91,

an indicator finger 92, and afixed dial 93.

, After theinechanismfhas been properly adof revolution for the table, and the justed, the knob maybe turned until the indicatonis aligned with a particular speed ernorwi'lllimit the motor to that speed. 1

the manufacture of mechanical motors Of this type for phonographs, it is very desirable to have the parts very compactly arranged and in suchiposition that every element likely' to require any adjustment may lie-[re dily accessible, Also, it is very desirabl'e tornalr'e the organization such that the entire assembly will occupy a comparatively small space and can be mounted in a light, open frame. By arranging a series of springs as shown on a shaft lying sub stantially in the middle of the frame, lo-

cating the governor shaft transversely to the frame and across one end, and mounting the spindle between the governor shaft and the springs, a very compact motor is obtained. The drum of the governor shaft being close; to the bottom of the frame as shown in Fig. 2 permits the use of a short lever arm for carrying the pad 84: as compared with the long arm 89 by which the control is effected. By making the frame or supporting structure of a generally fiat, rectangle equipped with standards to provide bearings for the various shafts, practically every part of the entire assembly is pen to inspection while in place, and the bearings for all the shafts are readily accessible for adjustment or replacement. Furthermore, any one of the shafts can be readily removed in its entirety without dismantling the other parts of the machine.

The use of the arm 68 on the end of the standard 75 eliminates all cross pieces at the bottom of the frame that would interfere with access to the lower portion of the motor.

I am aware that changes in the form and proportion of parts, and in the details of construction of my invention may be made without departing from the spirit or sacrificing any of the advantages thereof, and I reserve the right to make all such changes as fairly fall within the scope of the following claims.

I claim:

1. In a device of he class described, a frame, a standard. substantially midway between the sides of the frame and spaced from one end, a second standard adjacent to the opposite end and aligned with said first standard, a horizontal shaft supported by said standards, a series of driving springs mounted on said shaft, a winding mechanism adjacent to said second standard, a gear CO.n nected with said springs adjacent to the first standard, a third standard at one side of the frame and at the end opposite the second standard and having an obliquely disposed arm to support an upright spindle, a spindle journalled in said frame and said arm and provided with a gear, a fourth standard aligned with said third standard and locatedadjacentto said springs, a second horiard aligned with said third standard and adjacent to the opposite side of the frame, a governor shaft supported by said third and fifth standard, gearing between said gover .a brake lever pivoted to said frame, and a brake carried by said lever and adapted to co-operate with said drum.

2. In a device of the class described, a

frame, a pair of standards arranged centrally with respect to said frame, a shaft mounted in said standards, a series of springs mounted on said shaft, a gear connected with said springs at one end, a vertical spindle journalled in the frame adjacent to said gear, reduction gearing between said spindle and said gear, a governor including a transversely arranged shaft, a pair of standards on which said governor shaft is journalled, one of said standards being equipped with an arm extending towards said springs and provided with a bearing for one end of said spindle, a drum mounted on said governor shaft, a brake adapted to co-operate with said drum, a lever pivoted to said frame and carrying said brake, and means for adjusting said lever.

MARTIN NYSTROM. 

